Fault codes P22xx: NOx sensors and probes
Engine and transmission codes common to all makes (SAE J2012 standard).
Official codes: 256, from smallest to largest. Tap a code to get a direct link to share.
| Code | Meaning |
|---|---|
| P2200 | NOx Sensor Circuit (Bank 1) |
| P2201 | NOx Sensor Range/Performance (Bank 1) |
| P2202 | NOx Sensor Circuit Low (Bank 1) |
| P2203 | NOx Sensor Circuit High (Bank 1) |
| P2204 | NOx Sensor Circuit Intermittent (Bank 1) |
| P2205 | NOx Sensor Heater Control Circuit (Bank 1) |
| P2206 | NOx Sensor Circuit (Bank 2) |
| P2207 | NOx Sensor Circuit Range/Performance (Bank 2) |
| P2208 | NOx Sensor Heater Circuit (Bank 2) |
| P2209 | NOx Sensor Heater Sense Circuit Range/Performance (Bank 2) |
| P220A | NOx Sensor Supply Voltage Circuit (Bank 1 Sensor 1) |
| P220B | NOx Sensor Supply Voltage Circuit (Bank 1 Sensor 2) |
| P220C | NOx Sensor Supply Voltage Circuit (Bank 2 Sensor 1) |
| P220D | NOx Sensor Supply Voltage Circuit (Bank 2 Sensor 2) |
| P220E | NOx Sensor Heater Control Circuit Range/Performance (Bank 1 Sensor 1) |
| P220F | NOx Sensor Heater Control Circuit Range/Performance (Bank 1 Sensor 2) |
| P2210 | NOx Sensor Circuit Intermittent (Bank 2) |
| P2211 | NOx Sensor Heater Sense Circuit Intermittent (Bank 2) |
| P2212 | NOx Sensor Heater Sense Circuit Intermittent (Bank 1 Sensor 1) |
| P2213 | NOx Sensor Circuit (Bank 2) |
| P2214 | NOx Sensor Circuit Range/Performance (Bank 2) |
| P2215 | NOx Sensor Circuit Low (Bank 2) |
| P2216 | NOx Sensor Circuit High (Bank 2) |
| P2217 | NOx Sensor Circuit Intermittent (Bank 2) |
| P2218 | NOx Sensor Heater Control Circuit/Open (Bank 2) |
| P2219 | NOx Sensor Heater Control Circuit Low (Bank 2) |
| P221A | NOx Sensor 1/2 Correlation (Bank 1) |
| P221B | NOx Sensor 1/2 Correlation (Bank 2) |
| P221C | Reductant Heater B Current Too Low |
| P221D | Reductant Heater B Current Too High |
| P221E | Reductant Heater C Current Too Low |
| P221F | Reductant Heater C Current Too High |
| P2220 | NOx Sensor Heater Control Circuit High (Bank 2) |
| P2221 | NOx Sensor Heater Sense Circuit (Bank 2) |
| P2222 | NOx Sensor Heater Sense Circuit Range/Performance (Bank 2) |
| P2223 | NOx Sensor Heater Sense Circuit Low (Bank 2) |
| P2224 | NOx Sensor Heater Sense Circuit High (Bank 2) |
| P2225 | NOx Sensor Heater Sense Circuit Intermittent (Bank 2) |
| P2226 | Barometric Pressure Circuit |
| P2227 | Barometric Pressure Circuit Range/Performance |
| P2228 | Barometric Pressure Sensor Circuit Low |
| P2229 | Barometric Pressure Sensor Circuit High |
| P222A | Barometric Pressure Sensor B Circuit |
| P222B | Barometric Pressure Sensor B Circuit Range/Performance |
| P222C | Barometric Pressure Sensor B Circuit Low |
| P222D | Barometric Pressure Sensor B Circuit High |
| P222E | Barometric Pressure Sensor B Circuit Intermittent/Erratic |
| P222F | Barometric Pressure Sensor A/B Correlation |
| P2230 | Barometric Pressure Circuit Low |
| P2231 | Barometric Pressure Circuit High |
| P2232 | O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 1 Sensor 2) |
| P2233 | O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 1 Sensor 3) |
| P2234 | O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 2 Sensor 1) |
| P2235 | O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 2 Sensor 2) |
| P2236 | O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 2 Sensor 3) |
| P2237 | O2 Sensor Pumping Current Circuit (Bank 1 Sensor 1) |
| P2238 | O2 Sensor Pumping Current Circuit Low (Bank 1 Sensor 1) |
| P2239 | O2 Sensor Pumping Current Circuit High (Bank 1 Sensor 1) |
| P223A | Reductant Heater E Control Circuit |
| P223B | Reductant Heater F Control Circuit |
| P223C | O2 Sensor Pumping Current Range/Performance (Bank 1) |
| P223D | O2 Sensor Pumping Current Range/Performance (Bank 2) |
| P223E | O2 Sensor Reference Resistance Out Of Range (Bank 1) |
| P223F | O2 Sensor Reference Resistance Out Of Range (Bank 2) |
| P2240 | O2 Sensor Pumping Current Circuit (Bank 2 Sensor 1) |
| P2241 | O2 Sensor Pumping Current Circuit Low (Bank 2 Sensor 1) |
| P2242 | O2 Sensor Pumping Current Circuit High (Bank 2 Sensor 1) |
| P2243 | O2 Sensor Reference Voltage Circuit (Bank 1 Sensor 1) |
| P2244 | O2 Sensor Reference Voltage Circuit Range/Performance (Bank 1 Sensor 1) |
| P2245 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1) |
| P2246 | O2 Sensor Reference Voltage Circuit High (Bank 1 Sensor 1) |
| P2247 | O2 Sensor Reference Voltage Circuit (Bank 2 Sensor 1) |
| P2248 | O2 Sensor Reference Voltage Circuit Range/Performance (Bank 2 Sensor 1) |
| P2249 | O2 Sensor Reference Voltage Circuit Low (Bank 2 Sensor 1) |
| P224A | NOx Sensor Heater Resistance (Bank 1 Sensor 1) |
| P224B | NOx Sensor Heater Resistance (Bank 1 Sensor 2) |
| P224C | Alternative Fuel Tank Shutoff Valve A Control Circuit/Open |
| P224D | Alternative Fuel Tank Shutoff Valve A Control Circuit Performance/Stuck Off |
| P224E | Alternative Fuel Tank Shutoff Valve A Control Circuit Low |
| P224F | Alternative Fuel Tank Shutoff Valve A Control Circuit High |
| P2250 | O2 Sensor Reference Voltage Circuit High (Bank 2 Sensor 1) |
| P2251 | O2 Sensor Negative Current Control Circuit (Bank 1 Sensor 1) |
| P2252 | O2 Sensor Negative Current Control Circuit Low (Bank 1 Sensor 1) |
| P2253 | O2 Sensor Negative Current Control Circuit High (Bank 1 Sensor 1) |
| P2254 | O2 Sensor Negative Current Control Circuit Low (Bank 2 Sensor 1) |
| P2255 | O2 Sensor Negative Current Control Circuit High (Bank 2 Sensor 1) |
| P2256 | O2 Sensor Heater Control Circuit Low Bank 1 Sensor 2 |
| P2257 | Secondary Air Injection System Control A Circuit Low |
| P2258 | Secondary Air Injection System Control A Circuit High |
| P2259 | Secondary Air Injection System Control B Circuit Low |
| P225A | NOx Sensor Calibration Memory (Bank 1 Sensor 1) |
| P225B | NOx Sensor Calibration Memory (Bank 1 Sensor 2) |
| P225C | NOx Sensor Performance - Signal Biased/Stuck High (Bank 1 Sensor 1) |
| P225D | NOx Sensor Performance - Signal Biased/Stuck Low (Bank 1 Sensor 1) |
| P225E | NOx Sensor Performance - Signal Biased/Stuck High (Bank 1 Sensor 2) |
| P225F | NOx Sensor Performance - Signal Biased/Stuck Low (Bank 1 Sensor 2) |
| P2260 | Secondary Air Injection System Control B Circuit High |
| P2261 | Turbo/Super Charger Bypass Valve Mechanical |
| P2262 | Turbo Boost Pressure Not Detected - Mechanical |
| P2263 | Turbo/Super Charger Boost System Performance |
| P2264 | Water in Fuel Sensor Circuit |
| P2265 | Water in Fuel Sensor Circuit Range/Performance |
| P2266 | Water in Fuel Sensor A Circuit Low |
| P2267 | Water in Fuel Sensor A Circuit High |
| P2268 | Water in Fuel Sensor A Circuit Intermittent |
| P2269 | Water in Fuel Condition - Sensor A |
| P226A | Water in Fuel Lamp Control Circuit |
| P226B | Turbocharger/Supercharger A Boost Pressure Too High - Mechanical |
| P226C | Turbocharger Boost Control A Slow Response |
| P226D | Particulate Filter Deteriorated/Missing Substrate (Bank 1) |
| P226E | Particulate Filter Deteriorated/Missing Substrate (Bank 2) |
| P226F | Turbocharger Boost Control B Slow Response |
| P2270 | O2 Sensor Signal Stuck Lean (Bank 1, Sensor 2) |
| P2271 | O2 Sensor Signal Stuck Rich (Bank 1, Sensor 2) |
| P2272 | O2 Sensor Signal Stuck Lean (Bank 2, Sensor 2) |
| P2273 | O2 Sensor Signal Stuck Rich (Bank 2, Sensor 2) |
| P2274 | O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 3) |
| P2275 | O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 3) |
| P2276 | O2 Sensor Signal Biased/Stuck Lean (Bank 2 Sensor 3) |
| P2277 | O2 Sensor Signal Biased/Stuck Rich (Bank 2 Sensor 3) |
| P2278 | O2 Sensor Signals Swapped Bank 1 Sensor 3 / Bank 2 Sensor 3 |
| P2279 | Intake Air System Leak |
| P227A | Barometric Pressure Sensor C Circuit |
| P227B | Barometric Pressure Sensor C Circuit Range/Performance |
| P227C | Barometric Pressure Sensor C Circuit Low |
| P227D | Barometric Pressure Sensor C Circuit High |
| P227E | Barometric Pressure Sensor C Circuit Intermittent/Erratic |
| P227F | Air Flow Restriction/Air Leak Between Air Filter and MAF (Bank 2) |
| P2280 | Air Flow Restriction / Air Filter Restriction |
| P2281 | Air Leak Between MAF and Throttle Body |
| P2282 | Air Leak Between Throttle Body and Intake Valves |
| P2283 | Injector Control Pressure Sensor Circuit |
| P2284 | Injector Control Pressure Sensor Circuit Range/Performance |
| P2285 | Injector Control Pressure Sensor Circuit Low |
| P2286 | Injector Control Pressure Sensor Circuit High |
| P2287 | Injector Control Pressure Sensor Intermittent |
| P2288 | Injector Control Pressure Too High |
| P2289 | Injector Control Pressure Too High - Engine Off |
| P228A | Fuel Pressure Regulator A - Forced Engine Shutdown |
| P228B | Fuel Pressure Regulator B - Forced Engine Shutdown |
| P228C | Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too Low |
| P228D | Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too High |
| P228E | Fuel Pressure Regulator A Exceeded Learning Limits - Too Low |
| P228F | Fuel Pressure Regulator A Exceeded Learning Limits - Too High |
| P2290 | Injector Control Pressure Too Low |
| P2291 | Injector Control Pressure Too Low - Engine Cranking |
| P2292 | Injector Control Pressure Erratic |
| P2293 | Fuel Pressure Regulator 2 Performance |
| P2294 | Fuel Pressure Regulator 2 Control Circuit |
| P2295 | Fuel Pressure Regulator 2 Control Circuit Low |
| P2296 | Fuel Pressure Regulator 2 Control Circuit High |
| P2297 | O2 Sensor Out of Range During Deceleration (Bank 1 Sensor 1) |
| P2298 | O2 Sensor Out of Range During Deceleration (Bank 2 Sensor 1) |
| P2299 | Brake Pedal Position / Accelerator Pedal Position Correlation |
| P229A | Fuel Pressure Regulator B Exceeded Control Limits - Pressure Too Low |
| P229B | Fuel Pressure Regulator B Exceeded Control Limits - Pressure Too High |
| P229C | Fuel Pressure Regulator B Exceeded Learning Limits - Too Low |
| P229D | Fuel Pressure Regulator B Exceeded Learning Limits - Too High |
| P229E | NOx Sensor Circuit (Bank 1 Sensor 2) |
| P229F | NOx Sensor Circuit Range/Performance Bank 1 Sensor 2 |
| P22A0 | NOx Sensor Circuit Low (Bank 1 Sensor 2) |
| P22A1 | NOx Sensor Circuit High (Bank 1 Sensor 2) |
| P22A2 | NOx Sensor Circuit Intermittent (Bank 1 Sensor 2) |
| P22A3 | NOx Sensor Heater Control Circuit/Open (Bank 1 Sensor 2) |
| P22A4 | NOx Sensor Heater Control Circuit Low (Bank 1 Sensor 2) |
| P22A5 | NOx Sensor Heater Control Circuit High (Bank 1 Sensor 2) |
| P22A6 | NOx Sensor Heater Sense Circuit (Bank 1 Sensor 2) |
| P22A7 | NOx Sensor Heater Sense Circuit Range/Performance (Bank 1 Sensor 2) |
| P22A8 | NOx Sensor Heater Sense Circuit Low (Bank 1 Sensor 2) |
| P22A9 | NOx Sensor Heater Sense Circuit High (Bank 1 Sensor 2) |
| P22AA | NOx Sensor Heater Sense Circuit Intermittent (Bank 1 Sensor 2) |
| P22AB | O2 Sensor Positive Current Control Circuit/Open (Bank 1 Sensor 2) |
| P22AC | O2 Sensor Positive Current Control Circuit Low (Bank 1 Sensor 2) |
| P22AD | O2 Sensor Positive Current Control Circuit High (Bank 1 Sensor 2) |
| P22AE | O2 Sensor Reference Voltage Circuit/Open (Bank 1 Sensor 2) |
| P22AF | O2 Sensor Reference Voltage Performance (Bank 1 Sensor 2) |
| P22B0 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 2) |
| P22B1 | O2 Sensor Reference Voltage Circuit High (Bank 1 Sensor 2) |
| P22B2 | O2 Sensor Negative Current Control Circuit/Open (Bank 1 Sensor 2) |
| P22B3 | O2 Sensor Negative Current Control Circuit Low (Bank 1 Sensor 2) |
| P22B4 | O2 Sensor Negative Current Control Circuit High (Bank 1 Sensor 2) |
| P22B5 | O2 Sensor Pumping Current Trim Circuit/Open (Bank 1 Sensor 2) |
| P22B6 | O2 Sensor Pumping Current Trim Circuit Low (Bank 1 Sensor 2) |
| P22B7 | O2 Sensor Pumping Current Trim Circuit High (Bank 1 Sensor 2) |
| P22B8 | O2 Sensor Positive Current Control Circuit/Open (Bank 2 Sensor 2) |
| P22B9 | O2 Sensor Positive Current Control Circuit Low (Bank 2 Sensor 2) |
| P22BA | O2 Sensor Positive Current Control Circuit High (Bank 2 Sensor 2) |
| P22BB | O2 Sensor Reference Voltage Circuit/Open (Bank 2 Sensor 2) |
| P22BC | O2 Sensor Reference Voltage Performance (Bank 2 Sensor 2) |
| P22BD | O2 Sensor Reference Voltage Circuit Low (Bank 2 Sensor 2) |
| P22BE | O2 Sensor Reference Voltage Circuit High (Bank 2 Sensor 2) |
| P22BF | O2 Sensor Negative Current Control Circuit/Open (Bank 2 Sensor 2) |
| P22C0 | O2 Sensor Negative Current Control Circuit Low (Bank 2 Sensor 2) |
| P22C1 | O2 Sensor Negative Current Control Circuit High (Bank 2 Sensor 2) |
| P22C2 | O2 Sensor Pumping Current Trim Circuit/Open (Bank 2 Sensor 2) |
| P22C3 | O2 Sensor Pumping Current Trim Circuit Low (Bank 2 Sensor 2) |
| P22C4 | O2 Sensor Pumping Current Trim Circuit High (Bank 2 Sensor 2) |
| P22C5 | Turbocharger Compressor Outlet Valve Control Circuit/Open |
| P22C6 | Turbocharger Compressor Outlet Valve Control Circuit Low |
| P22C7 | Turbocharger Compressor Outlet Valve Control Circuit High |
| P22C8 | Turbocharger Compressor Outlet Valve Stuck Open |
| P22C9 | Turbocharger Compressor Outlet Valve Stuck Closed |
| P22CA | Turbocharger Compressor Outlet Switching Valve Control Circuit/Open |
| P22CB | Turbocharger Compressor Outlet Switching Valve Control Circuit Low |
| P22CC | Turbocharger Compressor Outlet Switching Valve Control Circuit High |
| P22CD | Turbocharger Compressor Outlet Switching Valve Stuck Open |
| P22CE | Turbocharger Compressor Outlet Switching Valve Stuck Closed |
| P22CF | Turbocharger Turbine Inlet Valve Control Circuit/Open |
| P22D0 | Turbocharger Turbine Inlet Valve Control Circuit Low |
| P22D1 | Turbocharger Turbine Inlet Valve Control Circuit High |
| P22D2 | Turbocharger Turbine Inlet Valve Stuck Open |
| P22D3 | Turbocharger Turbine Inlet Valve Stuck Closed |
| P22D4 | Turbocharger Turbine Inlet Valve Position Sensor Circuit |
| P22D5 | Turbocharger Turbine Inlet Valve Position Sensor Circuit Range/Performance |
| P22D6 | Turbocharger Turbine Inlet Valve Position Sensor Circuit Low |
| P22D7 | Turbocharger Turbine Inlet Valve Position Sensor Circuit High |
| P22D8 | Turbocharger Turbine Inlet Valve Position Sensor Circuit Intermittent/Erratic |
| P22D9 | Cylinder 1 Alternative Fuel Injector Control Circuit/Open |
| P22DA | Cylinder 1 Alternative Fuel Injector Control Circuit Low |
| P22DB | Cylinder 1 Alternative Fuel Injector Control Circuit High |
| P22DC | Cylinder 1 Alternative Fuel Injector Control Circuit Range/Performance |
| P22DD | Cylinder 2 Alternative Fuel Injector Control Circuit/Open |
| P22DE | Cylinder 2 Alternative Fuel Injector Control Circuit Low |
| P22DF | Cylinder 2 Alternative Fuel Injector Control Circuit High |
| P22E0 | Cylinder 2 Alternative Fuel Injector Control Circuit Range/Performance |
| P22E1 | Cylinder 3 Alternative Fuel Injector Control Circuit/Open |
| P22E2 | Cylinder 3 Alternative Fuel Injector Control Circuit Low |
| P22E3 | Cylinder 3 Alternative Fuel Injector Control Circuit High |
| P22E4 | Cylinder 3 Alternative Fuel Injector Control Circuit Range/Performance |
| P22E5 | Cylinder 4 Alternative Fuel Injector Control Circuit/Open |
| P22E6 | Cylinder 4 Alternative Fuel Injector Control Circuit Low |
| P22E7 | Cylinder 4 Alternative Fuel Injector Control Circuit High |
| P22E8 | Cylinder 4 Alternative Fuel Injector Control Circuit Range/Performance |
| P22E9 | Cylinder 5 Alternative Fuel Injector Control Circuit/Open |
| P22EA | Cylinder 5 Alternative Fuel Injector Control Circuit Low |
| P22EB | Cylinder 5 Alternative Fuel Injector Control Circuit High |
| P22EC | Cylinder 5 Alternative Fuel Injector Control Circuit Range/Performance |
| P22ED | Cylinder 6 Alternative Fuel Injector Control Circuit/Open |
| P22EE | Cylinder 6 Alternative Fuel Injector Control Circuit Low |
| P22EF | Cylinder 6 Alternative Fuel Injector Control Circuit High |
| P22F0 | Cylinder 6 Alternative Fuel Injector Control Circuit Range/Performance |
| P22F1 | Particulate Matter Sensor Heater Performance |
| P22F2 | Cylinder 7 Alternative Fuel Injector Control Circuit Low |
| P22F3 | Cylinder 7 Alternative Fuel Injector Control Circuit High |
| P22F4 | Cylinder 7 Alternative Fuel Injector Control Circuit Range/Performance |
| P22F5 | Cylinder 8 Alternative Fuel Injector Control Circuit/Open |
| P22F6 | Cylinder 8 Alternative Fuel Injector Control Circuit Low |
| P22F7 | Cylinder 8 Alternative Fuel Injector Control Circuit High |
| P22F8 | Cylinder 8 Alternative Fuel Injector Control Circuit Range/Performance |
| P22F9 | NOx Sensor Performance - Slow Response Low to High (Bank 1 Sensor 1) |
| P22FA | NOx Sensor Performance - Slow Response High to Low (Bank 1 Sensor 1) |
| P22FB | NOx Sensor Performance - Sensing Element (Bank 1 Sensor 1) |
| P22FC | NOx Sensor Performance - Slow Response Low to High (Bank 1 Sensor 2) |
| P22FD | NOx Sensor Performance Slow Response High to Low Bank 1 Sensor 2 |
| P22FE | NOx Sensor Sensing Element Bank 1 Sensor 2 |
| P22FF | SCR NOx Catalyst Inlet Temperature Too Low |
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Official meanings: OBDex (public domain, CC0). Manufacturer codes: dtc-database (MIT license), probable meanings not verified by the manufacturers. The same meaning can vary depending on the model: always have a diagnosis confirmed by a professional.